CAT-18-938 Improving the Reliability of an FCC Hot Gas Expander

Description:

This case study examines the rerate of a poorly performing non-Elliott hot gas expander operated by a US refiner. Due to excessive blade erosion, along with severe steam cutting of the airfoils and disc, the machine required extensive maintenance every two to two-and-a-half years, well below the five- year maintenance run the user required. Elliott Group was contracted to retrofit a flowpath that would resolve the reliability issues and allow the expander to operate for the desired five-year operating campaign.